On Oct 14, 2007, at 17:54 , ntupel wrote:
> Now my problem still is, that I don't know how to speed things up. I
> tried putting seq and $! at various places with no apparent
> improvement.
> Maybe I need to find a different data structure for my random
> module and
> lazy lists are simply not working well enough here?
Unfortunately I'm not so good at that myself. Even more
unfortunately, my understanding is that randomly using seq and/or $!
not only usually doesn't help, but can actually make things slower;
and to do it right, you need to refer to the "simplified" Core
Haskell code generated by GHC. And understanding *that* requires
rather more familiarity with Core than I have. :/
--
brandon s. allbery [solaris,freebsd,perl,pugs,haskell] allbery at kf8nh.com
system administrator [openafs,heimdal,too many hats] allbery at ece.cmu.edu
electrical and computer engineering, carnegie mellon university KF8NH